Boosting tribo-mechanical, thermal expansion and electrical performance of waste polytetrafluoroethylene using high-strength carbide ceramics
Ahmed Kamal, Ahmed Gaafer, Ahmed O. Mosleh, Mohammed A. Taha
TL;DR
This paper shows how adding carbide ceramics and graphene to waste PTFE improves its mechanical, thermal, and electrical properties for industrial use.
Contribution
A sustainable method to enhance PTFE waste with B4C and graphene for improved performance in mechanical, thermal, and electrical applications.
Findings
Adding B4C and graphene to PTFE increased microhardness, compressive stress, and Young’s modulus by over 70%.
The composite reduced wear rate, friction coefficient, and thermal expansion by more than 40%.
Electrical conductivity of the PTFE matrix improved with the addition of ceramic and graphene reinforcements.
Abstract
Polytetrafluoroethylene (PTFE) is widely used across various industrial and technological fields, including aerospace, automotive, electronics, and chemical processing. This work presents a sustainable approach to reusing PTFE waste and enhancing the limited applications of PTFE, which are constrained by its inferior mechanical properties, thermal expansion, and wear resistance. The reuse of PTFE scrap produced by lathe shops improves its previously mentioned properties by adding high-strength and high-stability ceramics. In this context, powder metallurgy technology produces PTFE-based composites reinforced with boron carbide (B4C) nanoparticles and graphene nanosheets. The phase composition and microstructure were determined using X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM) techniques. XRD indicated the presence of PTFE and B4C phases in the chart…
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Taxonomy
TopicsTribology and Wear Analysis · Thermal properties of materials · Fiber-reinforced polymer composites